Ginger · Hamhŭng, South Hamgyong, North Korea
When to plant ginger in Hamhŭng
Main outdoor window
4 May - 1 Jun
The window this page is built around.
Timed from last spring frost
20 April
In Hamhŭng, on your chosen risk.
Ready to pick
1 Oct - 31 Dec
If you plant at the start of the window.
The average last frost. Half of all years are later than this.
Step by step in Hamhŭng
Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.
Start indoors
23 Feb - 23 Mar
Eight weeks before your last frost, under cover or on a windowsill.
Plant rhizomes
4 May - 1 Jun
Two weeks after your last frost.
Harvest
1 Oct - 31 Dec
Ginger through the year
Against the frost risk in Hamhŭng
Why these dates
Sprout the rhizome indoors eight weeks before the last frost and move outside two weeks after it. Young stem ginger can be lifted at six months; mature ginger needs the full season.
Killed at 0C and dormant below 15C. Harvest when the leaves yellow, which in a temperate climate means before the first frost rather than at true maturity.
Seed packets and extension guides express timing as weeks either side of the last spring frost, because that is the only reference point that travels. Ginger are timed from 8 weeks before that frost for an indoor start, with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Hamhŭng.
The median frost-free season here is 185 days, against 240 to 300 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Hamhŭng
Other vegetables to time
Growing ginger in Hamhŭng
When should I plant ginger in Hamhŭng?
Aim for 4 May - 1 Jun in an average year. If you would rather not gamble on the weather, wait until 10 May - 7 Jun - by then frost has finished in nine years out of ten.
When will ginger be ready to harvest in Hamhŭng?
Expect to start picking around 1 Oct - 31 Dec, based on 240 to 300 days to maturity from the planting date calculated for this location.
How much frost will ginger tolerate?
Killed at 0C and dormant below 15C. Harvest when the leaves yellow, which in a temperate climate means before the first frost rather than at true maturity.